Store one vector range inside another

How to store the values ​​of vector x, say from x(50,1) to x(100,1)?

I tried in the following way, but it didn't work.

RES_BLOCK_C=X(385,1):X(1921.1) 

Ans:

RES_BLOCK_C = 0 1

Answer 1

[Jonas]

put the : range expression in the braces to select a range if a vector:

vec=1:10
part=vec(5:8)

Answer 2

[Voss]

RES_BLOCK_C = X(385:1921,1);